Centrifugal froth-suppressor.



E. I). HANSEN & G. G. F. C. WINKLER.`

GENTRIFUGAL FROTH SUPPRESSOR.

APPLICATION FILED 13110.11, 1011.

" Losa-iai.

w rra srnsapENT OFFRE EDUARI) ANIEL HANSEN, OF HAMBURG, GERMANY, ANDGUSTAV GOTLIEB 'FRED- ERIK CHRISTIAN WINKLER, QF ODENSE, DENMARK,ASSIGNORS T BERGEDORFER EISENWERK AKTIENGESELLSCHAFT, 0F SANDE, NEARBERGEDORF, GERMANY.

CENTRIFUGAL FROTH-SUPPRESSOR.

Specification of Letters Patent.

Application :tiled December 11, 1911.

Patented July 2, 1912.

Serial No. 665,120.

To all lwhom t may concern.'

Be it known that we, EDUARD DANIEL HANSEN and GUs'rAv GOTLIEB FREDERIK-provements in Centrifugal Froth-Suppressors, of which the following is aspecification.

When milk is t-reated in a separator or apasteurizing apparatus the milkwill froth much while running ofl". This frothing will not only preventthe milk being immediately treated further, but much milk will also belost by being sprayed and spattered about. For meeting this troublefroth Suppressors have been employed, which have the object of breakingthe air bubbles in the fluid, so that the milk will How off quietly andfree of froth. Such froth Suppressors mostly consist of a horizontalrapidly revolving drum, int-o which the milk is introduced for beingsubmitted to the action of the centrifugal force. The spout of the drumis constructed in such a manner that only nonfrothy milk can flow offand the froth itself will be retained for the purpose of beingcompletely suppressed by the action of the centrifugal force. Forpractical purposes it is, however, of much more advantage to arrange thefroth suppressor vertically, for

'the reason that a much smoother run will be thereby insured. Besidesthe vertical suppressor will be much more steady.

In the accompanying drawing a froth suppressor of the hereinbeforedescribed character is exemplified in a diagrammatical manner and to thegreater part in a longitudinal section.

In this drawing a is the rotary drum or bowl mounted on the spindle b.The latter is rotated at a high speed by means of a gear c. The bowl ais surrounded by a stationary casing for the purpose of protecting itagainst contact from outside and of avoiding the fluid being spatteredabout and lost. The upper end of this casing hasan annular chamber g,from which extend two funnel shaped walls 2 and 3. The latter areconcentrically arranged around each other leaving a narrow space onlybetween them. Their diameters at their mouths are so'large, that theywill reach almost up to the shell of the bowl. On the bowl is bolted alid z', which-has the object of retaining the froth. In the bowl areprovided vanes e. From the said annular chamber is branched off the pipe4 for the discharge of the defrothed milk. The milk supply pipe L of thesupply vessel f above it, passes through the annular chamber.

The milk to be defrothed is introduced into the vessel f whence it flowsthrough the short pipe L into the interior of the bowl a. Here it isSeized by the vanes e and made to rotate at a high speed together withthe bowl, so that it will be forcibly pressed against the shell of thebowl. The bubbles of air will in consequence thereof burst or will haveto recede toward the inside of the bowl. The milk which has become freeof froth will pass at the periphery of the funnel shaped walls 2 and 3into the narrow chamber between them, thence into the annular chamber gand `finally into the discharge pipe 4. In consequence of the fact thatthe mouth of chamber c is farther from the axis of the bowl' than theopening through the lid z', only milkwhich is free of rfroth can enterinto said chamber 7c. Because of the centrifugal action, the layer ofmilk along the wall of the bowl is under pressure. As the funnel-shapedplates are stationary, the milk particles which flow into the spacebetween the plates gradually lose their velocity, and correspondinglycease t0 be under pressure. particles are driven to the periphery of thedrum and submitted to the full pressure, they have a tendency tomovetoward the region of lower pressure bet-Ween the walls 2, 3, so thatthe milk is positively forced into and through the tube 4 without theuse of a pump or other forcing means, as has been shown in the actualuse of the device.

We claim:

A centrifugal froth suppressor compris- As the 'successive milk.

ing a bowl mounted on a, vertical axis, and Han1burg,Germany, this 25thdey of No- 10 having inwardly extending venes, a stationveinher 1911.ary liquid discharging device consisting of two separated annularconcentrically er ranged walls extending into the bowl and intoproximity to the Wall thereof and a EDUARD DANIEL HANSEN. GUSTAV GOTLIEBFREDERIK CHRISTIAN WINKLER. t

milk supply pipev extending into the bowl In presence of through thedischarging device. ERNEST H. L. MUMMENHOFF,

The foregoing specication s1gned at lDA CHRIST. HAFERMANN.

lopies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

' Washington, D. G.

